diff --git a/quickjs.c b/quickjs.c index ae4a83f..46e124a 100644 --- a/quickjs.c +++ b/quickjs.c @@ -21260,12 +21260,10 @@ static __exception int js_parse_object_literal(JSParseState *s) #define PF_IN_ACCEPTED (1 << 0) /* allow function calls parsing in js_parse_postfix_expr() */ #define PF_POSTFIX_CALL (1 << 1) -/* allow arrow functions parsing in js_parse_postfix_expr() */ -#define PF_ARROW_FUNC (1 << 2) /* allow the exponentiation operator in js_parse_unary() */ -#define PF_POW_ALLOWED (1 << 3) +#define PF_POW_ALLOWED (1 << 2) /* forbid the exponentiation operator in js_parse_unary() */ -#define PF_POW_FORBIDDEN (1 << 4) +#define PF_POW_FORBIDDEN (1 << 3) static __exception int js_parse_postfix_expr(JSParseState *s, int parse_flags); @@ -22925,7 +22923,7 @@ static void optional_chain_test(JSParseState *s, int *poptional_chaining_label, emit_label(s, label_next); } -/* allowed parse_flags: PF_POSTFIX_CALL, PF_ARROW_FUNC */ +/* allowed parse_flags: PF_POSTFIX_CALL */ static __exception int js_parse_postfix_expr(JSParseState *s, int parse_flags) { FuncCallType call_type; @@ -23003,18 +23001,8 @@ static __exception int js_parse_postfix_expr(JSParseState *s, int parse_flags) } break; case '(': - if ((parse_flags & PF_ARROW_FUNC) && - js_parse_skip_parens_token(s, NULL, TRUE) == TOK_ARROW) { - if (js_parse_function_decl(s, JS_PARSE_FUNC_ARROW, - JS_FUNC_NORMAL, JS_ATOM_NULL, - s->token.ptr, - s->token.line_num, - s->token.col_num)) - return -1; - } else { - if (js_parse_expr_paren(s)) - return -1; - } + if (js_parse_expr_paren(s)) + return -1; break; case TOK_FUNCTION: if (js_parse_function_decl(s, JS_PARSE_FUNC_EXPR, @@ -23056,16 +23044,8 @@ static __exception int js_parse_postfix_expr(JSParseState *s, int parse_flags) if (s->token.u.ident.is_reserved) { return js_parse_error_reserved_identifier(s); } - if ((parse_flags & PF_ARROW_FUNC) && - peek_token(s, TRUE) == TOK_ARROW) { - if (js_parse_function_decl(s, JS_PARSE_FUNC_ARROW, - JS_FUNC_NORMAL, JS_ATOM_NULL, - s->token.ptr, - s->token.line_num, - s->token.col_num)) - return -1; - } else if (token_is_pseudo_keyword(s, JS_ATOM_async) && - peek_token(s, TRUE) != '\n') { + if (token_is_pseudo_keyword(s, JS_ATOM_async) && + peek_token(s, TRUE) != '\n') { const uint8_t *source_ptr; int source_line_num; int source_col_num; @@ -23082,17 +23062,6 @@ static __exception int js_parse_postfix_expr(JSParseState *s, int parse_flags) source_line_num, source_col_num)) return -1; - } else if ((parse_flags & PF_ARROW_FUNC) && - ((s->token.val == '(' && - js_parse_skip_parens_token(s, NULL, TRUE) == TOK_ARROW) || - (s->token.val == TOK_IDENT && !s->token.u.ident.is_reserved && - peek_token(s, TRUE) == TOK_ARROW))) { - if (js_parse_function_decl(s, JS_PARSE_FUNC_ARROW, - JS_FUNC_ASYNC, JS_ATOM_NULL, - source_ptr, - source_line_num, - source_col_num)) - return -1; } else { name = JS_DupAtom(s->ctx, JS_ATOM_async); goto do_get_var; @@ -23104,8 +23073,10 @@ static __exception int js_parse_postfix_expr(JSParseState *s, int parse_flags) return -1; } name = JS_DupAtom(s->ctx, s->token.u.ident.atom); - if (next_token(s)) /* update line number before emitting code */ + if (next_token(s)) { /* update line number before emitting code */ + JS_FreeAtom(s->ctx, name); return -1; + } do_get_var: emit_op(s, OP_scope_get_var); emit_u32(s, name); @@ -23587,7 +23558,7 @@ static __exception int js_parse_delete(JSParseState *s) return 0; } -/* allowed parse_flags: PF_ARROW_FUNC, PF_POW_ALLOWED, PF_POW_FORBIDDEN */ +/* allowed parse_flags: PF_POW_ALLOWED, PF_POW_FORBIDDEN */ static __exception int js_parse_unary(JSParseState *s, int parse_flags) { int op; @@ -23677,8 +23648,7 @@ static __exception int js_parse_unary(JSParseState *s, int parse_flags) parse_flags = 0; break; default: - if (js_parse_postfix_expr(s, (parse_flags & PF_ARROW_FUNC) | - PF_POSTFIX_CALL)) + if (js_parse_postfix_expr(s, PF_POSTFIX_CALL)) return -1; if (!s->got_lf && (s->token.val == TOK_DEC || s->token.val == TOK_INC)) { @@ -23714,15 +23684,14 @@ static __exception int js_parse_unary(JSParseState *s, int parse_flags) return 0; } -/* allowed parse_flags: PF_ARROW_FUNC, PF_IN_ACCEPTED */ +/* allowed parse_flags: PF_IN_ACCEPTED */ static __exception int js_parse_expr_binary(JSParseState *s, int level, int parse_flags) { int op, opcode; if (level == 0) { - return js_parse_unary(s, (parse_flags & PF_ARROW_FUNC) | - PF_POW_ALLOWED); + return js_parse_unary(s, PF_POW_ALLOWED); } if (js_parse_expr_binary(s, level - 1, parse_flags)) return -1; @@ -23849,14 +23818,14 @@ static __exception int js_parse_expr_binary(JSParseState *s, int level, } if (next_token(s)) return -1; - if (js_parse_expr_binary(s, level - 1, parse_flags & ~PF_ARROW_FUNC)) + if (js_parse_expr_binary(s, level - 1, parse_flags)) return -1; emit_op(s, opcode); } return 0; } -/* allowed parse_flags: PF_ARROW_FUNC, PF_IN_ACCEPTED */ +/* allowed parse_flags: PF_IN_ACCEPTED */ static __exception int js_parse_logical_and_or(JSParseState *s, int op, int parse_flags) { @@ -23880,11 +23849,10 @@ static __exception int js_parse_logical_and_or(JSParseState *s, int op, emit_op(s, OP_drop); if (op == TOK_LAND) { - if (js_parse_expr_binary(s, 8, parse_flags & ~PF_ARROW_FUNC)) + if (js_parse_expr_binary(s, 8, parse_flags)) return -1; } else { - if (js_parse_logical_and_or(s, TOK_LAND, - parse_flags & ~PF_ARROW_FUNC)) + if (js_parse_logical_and_or(s, TOK_LAND, parse_flags)) return -1; } if (s->token.val != op) { @@ -23916,7 +23884,7 @@ static __exception int js_parse_coalesce_expr(JSParseState *s, int parse_flags) emit_goto(s, OP_if_false, label1); emit_op(s, OP_drop); - if (js_parse_expr_binary(s, 8, parse_flags & ~PF_ARROW_FUNC)) + if (js_parse_expr_binary(s, 8, parse_flags)) return -1; if (s->token.val != TOK_DOUBLE_QUESTION_MARK) break; @@ -23926,7 +23894,7 @@ static __exception int js_parse_coalesce_expr(JSParseState *s, int parse_flags) return 0; } -/* allowed parse_flags: PF_ARROW_FUNC, PF_IN_ACCEPTED */ +/* allowed parse_flags: PF_IN_ACCEPTED */ static __exception int js_parse_cond_expr(JSParseState *s, int parse_flags) { int label1, label2; @@ -24105,12 +24073,54 @@ static __exception int js_parse_assign_expr2(JSParseState *s, int parse_flags) emit_label(s, label_next); } return 0; + } else if (s->token.val == '(' && + js_parse_skip_parens_token(s, NULL, TRUE) == TOK_ARROW) { + return js_parse_function_decl(s, JS_PARSE_FUNC_ARROW, + JS_FUNC_NORMAL, JS_ATOM_NULL, + s->token.ptr, s->token.line_num, + s->token.col_num); + } else if (token_is_pseudo_keyword(s, JS_ATOM_async)) { + const uint8_t *source_ptr; + int tok, source_line_num, source_col_num; + JSParsePos pos; + + /* fast test */ + tok = peek_token(s, TRUE); + if (tok == TOK_FUNCTION || tok == '\n') + goto next; + + source_ptr = s->token.ptr; + source_line_num = s->token.line_num; + source_col_num = s->token.col_num; + js_parse_get_pos(s, &pos); + if (next_token(s)) + return -1; + if ((s->token.val == '(' && + js_parse_skip_parens_token(s, NULL, TRUE) == TOK_ARROW) || + (s->token.val == TOK_IDENT && !s->token.u.ident.is_reserved && + peek_token(s, TRUE) == TOK_ARROW)) { + return js_parse_function_decl(s, JS_PARSE_FUNC_ARROW, + JS_FUNC_ASYNC, JS_ATOM_NULL, + source_ptr, source_line_num, + source_col_num); + } else { + /* undo the token parsing */ + if (js_parse_seek_token(s, &pos)) + return -1; + } + } else if (s->token.val == TOK_IDENT && + peek_token(s, TRUE) == TOK_ARROW) { + return js_parse_function_decl(s, JS_PARSE_FUNC_ARROW, + JS_FUNC_NORMAL, JS_ATOM_NULL, + s->token.ptr, s->token.line_num, + s->token.col_num); } + next: if (s->token.val == TOK_IDENT) { /* name0 is used to check for OP_set_name pattern, not duplicated */ name0 = s->token.u.ident.atom; } - if (js_parse_cond_expr(s, parse_flags | PF_ARROW_FUNC)) + if (js_parse_cond_expr(s, parse_flags)) return -1; op = s->token.val;